**Find mode from the values 40,25,60,35,81,75,90,10.**

a. 46.

b. 47.

c. 45.

d. 40.

Answer: A

**Calculate median from the values 48, 86,29,32,5,10,18.**

a. 29.

b. 32.

c. 10.

d. 18.

Answer: A

**Find median 86,93,42,25,85,29.**

a. 63.

b. 64.

c. 63.5.

d. 64.5.

Answer: C

**Find mode 23, 26, 34, 37, 38,23, 21.**

a. 26.

b. 21.

c. 34.

d. 23.

Answer: D

**Mode = _______________.**

a. 3 median- 2 mean.

b. 2 median- 3 mean.

c. 3 median+ 2 mean.

d. 2 median+ 3 mean.

Answer: A

**Findmode2,4,1,5,6,5,7,5,8.**

a. 1.

b. 2.

c. 3.

d. 5.

Answer: D

**Find mode 45, 67, 87, 76, 45, 23.**

a. 45.

b. 45.5.

c. 43.

d. 23.

Answer: A

**The best mean to find the average percentage of increase is __________.**

a. arithmetic mean.

b. geometric mean.

c. harmonic mean.

d. weighted mean.

Answer: B

**Leptokurtic means the distribution of frequencies is ____________.**

a. more peaked.

b. normal.

c. flat.

d. scattered.

Answer: A

**Correlation analysis deals with ____.**

a. two attributes.

b. two variables alone.

c. variables.

d. averages.

Answer: C

**To calculate the average speed of vehicles, the most suitable method is _________.**

a. arithmetic mean.

b. geometric mean.

c. harmonic mean.

d. median.

Answer: B

**Standard deviation is used to know the _____________.**

a. quantity of data.

b. consistency of data.

c. classification of data.

d. statistics.

Answer: B

**Correlation between the number of children born and the train accident is_______.**

a. positive correction.

b. spurious correlation.

c. negative correlation.

d. rank correlation.

Answer: B

**To find the percentage of increase or decrease in rates, the suitable average is** **____________.**

a. harmonic mean.

b. geometric mean.

c. mode.

d. median.

Answer: B

**Standard deviation will reveal the quality of ____________.**

a. arithmetic mean.

b. average.

c. median.

d. range.

Answer: D

**Find the average of all the numbers between 6 and 34 which are divisible by 5.**

a. 18.

b. 20

c. 24.

d. 30.

Answer: B

**The average of first five multiples of 3 is _____________.**

a. 3.

b. 9.

c. 12.

d. 15.

Answer: B

**A student was asked to find the arithmetic mean of the numbers**

**3,11,7,9,15,13,8,19,17,21,14 and x. he found the mean to be 12.what should be the** **number in place of x.**

a. 3.

b. 7.

c. 17.

d. 31.

Answer: B

**The average of first 50 natural numbers is ____________.**

a. 12.25

b. 21.25

c. 25

d. 25.5

Answer: D

**Themeanof 12 ,22 ,32 ,42 ,52,62 ,72 is___________.**

a. 10.

b. 20.

c. 30.

d. 40.

Answer: B

**The average of all odd numbers upto 100 is ____________.**

a. 49.

b. 49.5.

c. 50.

d. 51.

Answer: C

**If a, b, c, d, e are five consecutive numbers, their average is ___________**.

a. 5(a+4).

b. abcde/5.

c. 5(a+b+c+d+e).

d. (a+b+c+d+e)/5.

Answer: D

**The sum of deviation of the actual values of Y and the computed values of Y is** **___________.**

a. maximum.

b. minimum.

c. 0.

d. 1.

Answer: C

**In the function y = f(x), the independent variable x is called _________.**

a. entry.

b. argument.

c. intermediate.

d. interpolation.

Answer: B

**In the function y = f(x), the dependent variable y is called _________.**

a. entry.

b. argument.

c. intermediate.

d. interpolation.

Answer: A

**Iteration method is a _________ method.**

a. direct.

b. indirect.

c. self correcting.

d. step by step.

Answer: C

**If any two rows or columns are interchanged in a matrix the value of the new** **determinant is _______.**

a. zero.

b. one.

c. of equal magnitude & same sign.

d. of equal magnitude & different sign.

Answer: D

**If any two rows or columns are identical in a matrix the value of the new** **determinant is _______.**

a. zero.

b. one.

c. same.

d. different.

Answer: A

**The determinant value of a matrix and its transpose is ________.**

a. of unequal magnitude & same sign.

b. of unequal magnitude & different sign.

c. of equal magnitude & same sign.

d. of equal magnitude & different sign.

Answer: C

**If 2 2 3 then 4 2 3 1 2 4 = 5 2 2 4 = __________. 312 612 d.x2 -18x+16=0.**

a. 5.

b. 10.

c. -5.

d. -10.

Answer: D

**Fourth degree equations are also called _______ equations.**

a. quadratic.

b. bi-quadratic.

c. cubic.

d. root of.

ANSWER: B

**A smooth curve that can be drawn to pass through near the plotted points, is called** **_______.**

a. curve fit.

b. approximating curve.

c. empirical curve.

d. linear curve.

Answer: B

**The equation of approximate curve taken as an approximate relation between x and y is called _________.**

a. curve fit.

b. approximating curve.

c. empirical relation.

d. linear form.

Answer: C

**The general problem of finding equations of approximating curves which fit a given**

**data is called __________.**

a. curve fitting

b. approximating curve

c. empirical relation

d. linear form.

Answer: A

**The best representative curve to the given set of points for which the sum of the squares of the residuals is a minimum is known as___________.**

a. curve fitting.

b. empirical relation.

c. linear form.

d. principles of least squares.

**Let the arithmetic mean of two numbers be 9 and the geometric mean be 4, then**

**these numbers are the roots of the quadratic equation_______.**

a.x2 +18x+16=0.

b.x2 -18x-16=0.

c.x2 +18x-16=0.

Answer: D

**There is at most one polynomial of degree ≤ n_______.**

a. which interpolates f(x) at (n+1) distinct points x0,x1……..xn.

b. which interpolates f(x) at (n-1) distinct points x0,x1……..xn.

c. which interpolates f(x) at n distinct points x0,x1……..xn.

d. which interpolates f(x) at (n-1) distinct points x0,x1……..xn-2.

Answer: A

**A differential equation is said to be linear if________.**

a. the dependent variable and its differential co-efficient occur in the second degree.

b. the dependent variable occurs in the first degree.

c. the dependent variable and its differential co-efficient occur only in the first degree.

d. the independent variable occurs in the first degree.

Answer: C

**The process of numerical integration of a function of a single variable is called____.**

a. Trapezoidal rule.

b. Simpson’s rule.

c. cubature.

d. quadrature.

Answer: D

**The process of numerical integration of a function of a two variable is called _____.**

a. Trapezoidal rule.

b. Simpson’s rule. c. cubature.

d. quadrature.

Answer: C

**If A is any square matrix of order n then kA = ______.**

a. k A .

b. knA.

c. kAn .

d.kn A.

Answer : D

**If the determinant of**

**0 1 ****x 2 x =0thenx=________. 13x**

a. 0.

b. 1.

c. -1

d. 2.

Answer : D

**The ranks are according to two attributes in a samples are 1,2,3,4,5 and 5,4,3,2,1.**

**The rank correlation between them is _____.**

a. 0.

b. -1.

c. 1.

d. 2.

**The average relationship between two variable is_______.**

a. correlation.

b. rank correlation.

c. regression.

d. both correlation and regression.

Answer: C

**The relationship between 3 or more variables is studied with the help of _______****correlation.**

a. simple.

b. multiple.

c. rank.

d. partial.

Answer: B

**Determinant (AB) = __________.**

a. det(A+B).

b. det A + det B.

c. det A. det B.

d. det (A/B).

Answer: C

**a-b a a a+b =**

a. a2 –b2.

b. –b2.

c. (a+b)(a-b).

d. a2+b2.

Answer: B

**2 2 3** **1**** 1 4 ****332**

a. 5.

________.

= _____________.

b. 0.

c. -5.

d. -10.

Answer: B

**If the relationship between two variables out of three variables is studied, the**

**correlation is said to be __________.**

a. simple.

b. multiple.

c. rank.

d. partial.

Answer: D

**(AB)-1 = ____________. **

a. A-1B-1.

b. B-1A-1.

c. A-1 +B-1.

d. A-1/ B-1.

Answer: B